I am facing an error trying to configure omniauth for integration testing purpose with cucumber (I set up Omniauth through Devise as the wiki provides)

Please see below:

Scenario: Test # features/omniauth.feature:3
Given I am signed in with facebook # features/step_definitions/omniauth_steps.rb:1
bad component(expected host component): http://www.example.com (URI::InvalidComponentError)
/Users/benoit/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/uri/generic.rb:395:in `check_host'
/Users/benoit/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/uri/generic.rb:409:in `host='
./features/step_definitions/omniauth_steps.rb:2:in `/^I am signed in with facebook$/'
features/omniauth.feature:4:in `Given I am signed in with facebook'
Then I open the page # features/step_definitions/debug_steps.rb:5

Here are my files:

omniauth.feature

Feature: OmniAuth
Scenario: Test
Given I am signed in with facebook
Then I open the page